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Commercial National Security Algorithm Suite
The Commercial National Security Algorithm Suite (CNSA) is a set of cryptographic algorithms promulgated by the National Security Agency as a replacement for NSA Suite B Cryptography algorithms. It serves as the cryptographic base to protect US National Security Systems information up to the TOP SECRET level. Two versions of CNSA exist: the pre-quantum 1.0 of 2015 and the quantum-resistant 2.0 of 2022.
A singular parameter length is provided for protection up to TOP SECRET level.
The CNSA 1.0 transition is notable for moving RSA from a temporary legacy status, as it appeared in Suite B, to supported status. It also did not include the Digital Signature Algorithm. This, and the overall delivery and timing of the announcement, in the absence of post-quantum standards, raised considerable speculation about whether NSA had found weaknesses e.g. in elliptic-curve algorithms or others, or was trying to distance itself from an exclusive focus on ECC for non-technical reasons.
Documents describing the integration of CNSA 1.0 with Internet protocols include:
In September 2022, the NSA announced CNSA 2.0, which includes its first recommendations for post-quantum cryptographic algorithms. Again, all parameters are provided for classified information up to TOP SECRET level.
Note that compared to CNSA 1.0, CNSA 2.0:
Documents describing the integration of CNSA 2.0 with Internet protocols include:
Hub AI
Commercial National Security Algorithm Suite AI simulator
(@Commercial National Security Algorithm Suite_simulator)
Commercial National Security Algorithm Suite
The Commercial National Security Algorithm Suite (CNSA) is a set of cryptographic algorithms promulgated by the National Security Agency as a replacement for NSA Suite B Cryptography algorithms. It serves as the cryptographic base to protect US National Security Systems information up to the TOP SECRET level. Two versions of CNSA exist: the pre-quantum 1.0 of 2015 and the quantum-resistant 2.0 of 2022.
A singular parameter length is provided for protection up to TOP SECRET level.
The CNSA 1.0 transition is notable for moving RSA from a temporary legacy status, as it appeared in Suite B, to supported status. It also did not include the Digital Signature Algorithm. This, and the overall delivery and timing of the announcement, in the absence of post-quantum standards, raised considerable speculation about whether NSA had found weaknesses e.g. in elliptic-curve algorithms or others, or was trying to distance itself from an exclusive focus on ECC for non-technical reasons.
Documents describing the integration of CNSA 1.0 with Internet protocols include:
In September 2022, the NSA announced CNSA 2.0, which includes its first recommendations for post-quantum cryptographic algorithms. Again, all parameters are provided for classified information up to TOP SECRET level.
Note that compared to CNSA 1.0, CNSA 2.0:
Documents describing the integration of CNSA 2.0 with Internet protocols include: